# ASTRU vs Challenge Go

The clearest difference is in-app purchases: Challenge Go at none against ASTRU's 1. Challenge Go also leads on iOS requirement (10 vs 12.0). ASTRU's advantage is update cadence (every 5 days vs every 10 days). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. ASTRU sells 1 one-off in-app purchase. Challenge Go asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ASTRU against 5.0 for Challenge Go. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

ASTRU ships an update every 5 days, Challenge Go every 10 days. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | ASTRU | Challenge Go |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/astru/id6467688328/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/challenge-go/id6739545195/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 10 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 102 MB | 188 MB |
| Requires iOS | 12.0 | **10** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Mohamed Elmejrab](https://appshunter.io/developer/1551548399) | [Connor Hawke](https://appshunter.io/developer/1586189635) |

## What reviewers say

### ASTRU

[App page](https://appshunter.io/ios/app/astru/id6467688328)

A physics-based puzzle game where players must guide an object to a target using celestial forces. Navigate through levels with unique gravitational and orbital mechanics to achieve accuracy and creativity.

**Highlights:** Celestial force mechanics, Physics-based puzzles, Orbital objects, Target-based levels, Creative problem-solving

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Lives | $1.99 | one-time |


### Challenge Go

[App page](https://appshunter.io/ios/app/challenge-go/id6739545195)

Navigate diverse environments, from forests to space, by fighting through levels to reach the portal. Utilize items to overcome obstacles and progress through 100 challenging stages.

**Highlights:** Tile-based action/puzzle gameplay, Diverse environments (forests, space, ruins), Item usage for progression, 100 challenging levels, Portal-based level progression

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ASTRU free?

ASTRU is free to download, with in-app purchases available.

### Is Challenge Go free?

Challenge Go is free to download, with no in-app purchases.

### Which has better reviews, ASTRU or Challenge Go?

ASTRU and Challenge Go are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do ASTRU or Challenge Go have ads?

Neither ASTRU nor Challenge Go shows ads.

### Which is updated more often, ASTRU or Challenge Go?

ASTRU ships an update every 5 days, and Challenge Go every 10 days. Most recently, ASTRU was updated on October 14, 2026 and Challenge Go on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*